Go to the Features section of your dashboard and click on the feature you'd like to edit. From there, you can edit the images and text.
How to edit which text...
Left Text: The top title bar field
Middle Text: The text editor
Right Text: "Link Text" text field (at the very bottom)

One more thing - for Pagelines guys - so without this plugin - no options show up on the page for each feature. I thought I was going crazy. Is this a bug? I have the latest PlatformPro Dev (Version 1.1.1) and am using firefox.